Diallyl Phthalate (DAP) Molding Compound for High Voltage (800V) and High Heat Resistance

Products

A plastic compound combines a high level of electrical insulation and heat resistance

We have launched a new compound grade AM-3800 in our diallyl phthalate (DAP) molding compound series (SUMIKON® AM). Diallyl phthalate is a thermosetting plastic known for its excellent electrical insulation, heat resistance, and moisture resistance properties. The AM-3800 offers a high level of insulation with a CTI of 800V (Comparative Tracking Index, measured by our company internal method*), this makes it suitable for applications in high voltage components. It also has high heat resistance with a glass transition temperature (Tg) of 235°C. In addition, AM-3800 can be used for thin-wall and complex shape molding by injection molding machines.
* according to our company's internal method

Features

Tracking resistance (CTI: Comparative Tracking Index)

A high tracking resistance of CTI 800V < (according to our company's internal method*) contributes to space-saving and weight reduction by reducing creepage distance.

Heat resistance

AM-3800 also has high heat resistance with a glass transition temperature (Tg) of 235°C. As a result, it maintains insulation breakdown strength equivalent to room temperature even in high-temperature environments of around 200°C.

Screw injection moldable

AM-3800 can be used for thin-wall molding by injection molding machines. The high CTI and the ability to mold thin and complex shapes allow for greater flexibility in component design, such as smaller parts and higher heat dissipation.

Fire resistance

Diallyl phthalate is a thermosetting resin that does not melt under fire, providing excellent fire resistance.

Temperature dependency of Dielectric strength (step-by-step method)

Applications

It is suitable for applications that require high electrical insulation and heat resistance due to high-voltage conditions.

Electronics and Electrical Equipment

Electronic Components

Insulation components inside control units (e.g., busbars, connectors, terminal blocks, potting cases)

Inverters, Onboard chargers, Junction boxes for electric vehicles (EVs)
Power conditioners for solar power generation systems
Power supply units for high-capacity servers

Inverters, Onboard chargers, Junction boxes for electric vehicles (EVs)

Power conditioners for solar power generation systems

Power supply units for high-capacity servers

Battery-Related Components for Electric Vehicles (EVs) Requiring Thermal Runaway Countermeasures

Busbars
Connector covers
Terminal blocks
Insulation plates

Technical Data

Item	Unit	AM-3800 High electrical insulation and heat resistance
Specific gravity	-	1.90
Flexural strength	MPa	140
Flexural modulus	MPa	13600
Dielectric breakdown strength (S/S)	MV/m	14
CTI (Comparative tracking index)	V	800

Note

The above values are typical values, not guaranteed.
Test method of CTI(Comparative tracking index) – our method;
The test with an applied voltage of 600V are according to IEC 60112. For tests with voltages of 650V or higher, the direction of the applied electrodes on the testing machine was reversed for the test.